On the other side of the coin, if this did improve Pox, that would be good for opposing decks like Delver, with cheap creatures, some burn spells, and Murktide Regent, possibly the best dragon in Magic, which can utilize that swollen graveyard
Gut, True Soul Zealot If you want to punch really hard as a reward for sacrificing your dorks, you cant do much better than Gut, True Soul Zealot
In fact, it just lasts one turn
Cavalry Charge The whopping five Commander decks released alongside March of the Machine were pretty hit-and-miss, but Cavalry Charge was a certified banger
(Scryfall note) First, the card is discarded
Wispmare For 3 mana, you get a flying creature that enters and destroys an enchantment